#include<iostream>
#include<unistd.h>
#include<pthread.h>

const int num = 5;
pthread_cond_t gcond = PTHREAD_COND_INITIALIZER;
pthread_mutex_t gmutex = PTHREAD_MUTEX_INITIALIZER;

void *Wait(void *args)
{
    std::string name = static_cast<const char *>(args);
    while(true)
    {
        pthread_mutex_lock(&gmutex);
        pthread_cond_wait(&gcond, &gmutex);
        std::cout << "I am : " << name << std::endl;
        sleep(1);
        pthread_mutex_unlock(&gmutex);
    }
}
int main()
{
    pthread_t threads[num];
    for (int i = 0; i < num;i++)
    {
        char *name = new char[1024];
        snprintf(name, 1024, "thread-%d", i + 1);
        pthread_create(&threads[i], nullptr, Wait, name);
    }

    //唤醒其他线程
    while(true)
    {
        pthread_cond_signal(&gcond);
        sleep(1);
    }
    for (int i = 0; i < num;i++)
    {
        pthread_join(threads[i], nullptr);
    }
}